<!DOCTYPE html>
<html>
 <head>
  <meta charset="UTF-8">
  <title> 实体字符 </title>  
 </head>
 <body>
  <!--
        实体字符都是以&开头,以;(分号)结尾
  -->
  空&nbsp;&nbsp;&nbsp;&nbsp;格
  &lt;&gt;&amp;&quot;&copy;&reg;
  &times;&divide;
  <b>
      <i>
          hello word
      </i>
  </b>
  
 </body>
</html>
